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/**
* $Id$
*
* ***** BEGIN GPL LICENSE BLOCK *****
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software Foundation,
* Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*
* The Original Code is Copyright (C) 2006 Blender Foundation.
* All rights reserved.
*
* The Original Code is: all of this file.
*
* Contributor(s): Bob Holcomb .
*
* ***** END GPL LICENSE BLOCK *****
*/
#include "../CMP_util.h"
/* ******************* Luma Matte Node ********************************* */
static bNodeSocketType cmp_node_luma_matte_in[]={
{SOCK_RGBA,1,"Image", 0.8f, 0.8f, 0.8f, 1.0f, 0.0f, 1.0f},
{-1,0,""}
};
static bNodeSocketType cmp_node_luma_matte_out[]={
{SOCK_RGBA,0,"Image", 0.8f, 0.8f, 0.8f, 1.0f, 0.0f, 1.0f},
{SOCK_VALUE,0,"Matte",0.0f, 0.0f, 0.0f, 1.0f, 0.0f, 1.0f},
{-1,0,""}
};
static void do_luma_matte(bNode *node, float *out, float *in)
{
NodeChroma *c=(NodeChroma *)node->storage;
float alpha;
alpha=0.0;
/* test range*/
if(in[0]>c->t1) {
alpha=1.0;
}
else if(in[0]<c->t2){
alpha=0.0;
}
else {/*blend */
alpha=(in[0]-c->t2)/(c->t1-c->t2);
}
/* don't make something that was more transparent less transparent */
if (alpha<in[3]) {
out[3]=alpha;
}
else {
out[3]=in[3];
}
}
static void node_composit_exec_luma_matte(void *data, bNode *node, bNodeStack **in, bNodeStack **out)
{
CompBuf *cbuf;
CompBuf *outbuf;
if(in[0]->hasinput==0) return;
if(in[0]->data==NULL) return;
if(out[0]->hasoutput==0 && out[1]->hasoutput==0) return;
cbuf=typecheck_compbuf(in[0]->data, CB_RGBA);
outbuf=dupalloc_compbuf(cbuf);
composit1_pixel_processor(node, outbuf, cbuf, in[1]->vec, do_rgba_to_yuva, CB_RGBA);
composit1_pixel_processor(node, outbuf, outbuf, in[1]->vec, do_luma_matte, CB_RGBA);
composit1_pixel_processor(node, outbuf, outbuf, in[1]->vec, do_yuva_to_rgba, CB_RGBA);
generate_preview(node, outbuf);
out[0]->data=outbuf;
if (out[1]->hasoutput)
out[1]->data=valbuf_from_rgbabuf(outbuf, CHAN_A);
if(cbuf!=in[0]->data)
free_compbuf(cbuf);
}
static void node_composit_init_luma_matte(bNode *node)
{
NodeChroma *c= MEM_callocN(sizeof(NodeChroma), "node chroma");
node->storage=c;
c->t1= 1.0f;
c->t2= 0.0f;
};
bNodeType cmp_node_luma_matte={
/* *next,*prev */ NULL, NULL,
/* type code */ CMP_NODE_LUMA_MATTE,
/* name */ "Luminance Key",
/* width+range */ 200, 80, 250,
/* class+opts */ NODE_CLASS_MATTE, NODE_PREVIEW|NODE_OPTIONS,
/* input sock */ cmp_node_luma_matte_in,
/* output sock */ cmp_node_luma_matte_out,
/* storage */ "NodeChroma",
/* execfunc */ node_composit_exec_luma_matte,
/* butfunc */ NULL,
/* initfunc */ node_composit_init_luma_matte,
/* freestoragefunc */ node_free_standard_storage,
/* copystoragefunc */ node_copy_standard_storage,
/* id */ NULL
};
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